Gas nozzle with multiple slot-type ports



March 1951 w. o. MELLIES 2,544,933

GAS NOZZLE WITH MULTIPLE SLOT-TYPE PORTS Filed Aug. 16, 1947 INVENTOR. iflj' m 0075111525 PQMQQQHLQ Patented Mar. 13,1951

GAS NOZZLE WITH MULTIPLE SLOT-TYPE roars William 0. M mes, Chicago, 111., assignor to International Harvester Company, a corporation of New Jersey This invention relates to a burner nozzle for "gas burners and similar heaters. v Nozzles of this general type disclosed herein have been heretofore known, one example of which is a nozzle comprising a body having a "hollow interior and formed with a hollow tapered :end provided with slots therein, the purpose of which nozzle is to difiuse gaseous fuels through incoming air so that such fuels will burn properly. Such nozzles find their principal use in soaking pits or other heating furnaces; It was characteristic of prior constructions that the nozzles were subjectv to warping and cracking because of the various temperatures to which they were subjected, with the result that the replacement of such nozzles necessarily occurred at a very high rate.

The principal object of the present invention .isto provide an improved nozzle so constructed as 'to be unaffected by temperature changes.

Another, object is to provide an'improved nozzle in which the tapered slotted end is arranged in such-a manner that the slotted portions are independent of each other, so that they may have freedom from each other during expansion and contraction as a result of variations in temperature.

Another object is to provide the nozzle with a tool receiving element by means of which the nozzle may be readily removed from the pit or furnace without the necessity of cooling down the pit or furnace.

The foregoing and other desirable objects and features of the invention will become apparent to those skilled in the art as the disclosure of a preferred embodiment of the invention progresses in thefollowing detailed description thereof as supplemented by the accompanying sheet of drawings in which:

Figure 1 is a plan view of the slotted end of the nozzle, a portion of the tool-receiving means being shown in position therein; and

' Figure 2 is a transverse sectional view through the nozzle together with the cap and tool-receiving means, there being shown in dot-dash lines a representation of a conventional pipe to which the nozzle is attached.

The nozzle includes a body having a cylindrical portion l provided with a hollow interior and having a conical or tapered end portion H, the base of which is integral or otherwise joined to the cylindrical portion l0 and the vertex of which as at I2 is spaced from the portion H1. The end portion H likewise has a hollow interior forming a continuation of the hollow interior of the Application August 16, 1947, Serial No. 768,965

'1. 3 Claims. (Cl..'158--116) cylindrical portion in and is thus encircled by a conical or tapered wall I3 provided with a plurality of circumferentially spaced fins l4 running lengthwise of portion l I or, generally speaking, running along the elements of the cone forming the portion I l. The fins project radially outwardly from the surface of the portion H and each fin is provided with a slot l5 which communicates exteriorly thereof and which fur.- ther communicates with the hollow interior of the body. The slots l5 communicate with each other at the vertex end I2 of the tapered portion H and thus communicate with an opening 16 formed at such vertex.

The construction thus far described provides an arrangement in which the fins [4 are. independent of each other except at their base portions by means of which they are joined to or form the continuation of the cylindrical portion l0. Consequently the fins l4 are free to expand or contract independently of each other in re-' sponse to variations in temperature. In prior constructions the arrangement was such that the slotted fins or comparable slotted portions were connected at the upper or vertex ends, with the result that the nozzle was subject to considerable warping and cracking.

I! having a lower annular lip 18,

The improved nozzle further includes a cal the inner periphery of which is ofa larger diameter than an imaginary circle including the outer upper ends of the fins l4, whereby radial expansion of the fins may occur without interference of the lip 18. The cap I! is centrally bored or otherwise apertured at [9 to receive means for securing the cap to the nozzle. In the preferred form of the invention illustrated, a securing means forms part of a tool-receiving element in the form of an eye bolt 20, having its eye por tion externally of the cap I! and including a shank 20 which passes loosely through the opening I9 in the cap and the opening 16 at the vertex end of the shank is threaded at 2| to receive a nut 22 at the interior of the nozzle.

The eye-bolt 20 provides means that may be engaged by a hook or'similar tool for the purpose of withdrawing the nozzle axially upwardly from the pipe with which it is associated, such pipe being represented by dot-dash lines in the drawing and designated by the numeral 23. By this means the nozzle may be withdrawn from the pipe 23 without. requiring that the furnace or pit be shut down and cooled.

It will be seen from the foregoing description that the nozzle forming the subject of the present 3 invention is considerably improved over nozzles as heretofore known. The present construction, in addition to eliminating or minimizing the possibility of warping and cracking, also provides novel means for contributing toward the easy removal of the nozzle from its position in a pit or furnace. Other advantages and features of the invention will undoubtedly occur to those skilled in the art, as will various modifications and alterations in the construction and design thereof as illustrated. It is not desired that the invention be limited to the precise details shown and described.

What is claimed is:

1. A burner nozzle or the like, comprising: a body having a hollow interior and including a generally cylindrical part provided with a coaxial, conical end; means providing an axially directed opening at the vertex of the conical end in communication with the hollow interior of the body; a plurality; of circumferentially spaced fins running lengthwise on the outer surface of the conical end; and means providing a plurality of slits circumferentially spaced and extending lengthwise of the conical end and being open to provide for communication with the hollow interior of the body, certain of the slots being in communication with the aforesaid opening whereby the vertex ends of certain of the fin-carrying portions of the conical end are separate from each 75 other and free to expand and contract independently of each other.

A burner nozzle .or the like comprising: a body having a hollow interior and including a tapered end; means providing an axially directed opening at the vertex of the tapered end in communication with the hollow interior of the body; and a plurality of fins circumferentially spaced about and running lengthwise of the tapered end, each fin having a slot running lengthwise thereof and each slot opening to the hollow interior of the body and communicating with the aforesaid opening at the vertex of the tapered end whereby the vertex ends of the fins are separate from 4 each other for independent freedom for expansion and contraction.

3. A burner nozzle or the like, comprising a body having a hollow interior and including a generally cylindrical part provided with a coaxial, conical end; means providing an axially directed opening at the vertex of the conical end, the opening being in communication with the hollow interior of the body, a plurality of fins circumferentially spaced projecting outwardly of the body and running lengthwise of the conical end, each fin having a slot running lengthwise thereof and each slot opening to the hollow interior of the body and communicating with the aforesaid opening at the vertex of the conical end, whereby the vertex ends of the fins are separate from each other, a cap supported on the conical end of the "body at the vertex thereof for covering the vertex ends of the fins, said cap having an opening in axial alignment with the vertex opening, and

means for removably clamping said cap to the conical end including a tool receiving portioniexternal to the cap and a shank connected to said portion and to said body, said shank extending through said opening in the cap and into said vertex opening, and being of substantially less cross sectional dimension than said opening whereby the fins are free to expand and contract independently with respect to each other and independently with respect to the shank of the clamping means.

. WILLIAM O. MELLIES,

REFERENCES crrnn The following references. are of record in the file of this patent:

UNITED STATES PATENTS Number Name -Date 1,657,995 Garneau Jan. 31, 1928 1,781,785 Kerr Nov. 18, 1930 1,986,311 White Jan. 1, 1935 2,407,349 Shaw Sept. 10, 1946 

